Twisting-machine



(Nomodel.)

G. L. BROWNELL.

TWISTING MACHINE.

Patented Aug. I8,

"UNITED STATES y PATENT OinucE.4 t

GEORGE LOOMIS'BR'OVVNELL, OF WORCESTER, MASSACHUSETTS.

TWISTING-IVIACHINE.

' SPECIFICATION forming part of Letters Patent No. 565,957, dated August 18, 1896. Application filed August 27, 1887. Serial No. 248,044. (No`model.) Patented in England December 22, 188 8,l\l`o.18,890.

To a/ZZ whom t may concern: Beit known that I, GEORGE LooMrs BROWN- ELL, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Twisting-Machines,(whicl1 was patented by me in Great Britain on or about the 22d day of December, 1888, No. 18,890,) of which the following is a specification, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of the twisting mechanism embodying my invention and showing a portion of the supporting-frame in transverse sectional view. Fig. 2 is a sectional view of the pinions by which the stretching and reeling mechanism is rotated. Fig. 8 is a' sectional view of the mechanism for compressing the twisted cord. Fig. 4 is an end view of thesame. Fig. 4a is a top view of the compressor, showing the lockingplate. g

Similar letters indicate similar parts in the different figures. 1

My present invention relates to certain improvements in the machine for making twines and cordage which was made the subject of Letters Patent of the United States granted to me on the 16th of April,pl878, No. 202,406; May 22, 1888, No. 277,986, and October 9, 1883, No. 286,258, to which reference may be had Vfor a fulland detailed description of such parts of the twisting-machine as are not herein specifically described, not being essential elements of my present invention.

My present inventionvhas referenceto the device for compressing the cord, and the nier-hooks for imparting the twist to the separate strands of which the cord is composed; and my invention consists in the construction and arrangement of the several parts, as hereinafter set forth and claimed.

` A A denote a portion of the framework of the machine, the part shown being one of the two ends of the frame, which are connected by the upper rail B and middlerail O, between which is placed the stretching and reeling mechanism, and a lower rail D, which supports the spools and. the strand-twisting mechanism. In each frame are usually placed a number of twisting mechanisms arranged in a line on opposite sides of` theframe, one of whichis shown in elevationin Fig. 1, a similar one being placed on the opposite side, but notshown in the drawings, and both being driven in common from the shafts E, E, and G, journaled in bearings on the frame and placed lengthwise thereof.' The spoolsiD, carrying the strands of which the twisted cord is composed, are placed on the spindles D2 and rest on the disks D3, attached to the spindles, which are held in the bearings D4 D4, and are driven bya band Dfrom the revolving shaft E. The spools D are placed loosely on the spindles and are rotated by their friction on the disks D3. Around each of the disks D3 are placed a lseries of pins DG, extending upwardly as high asl the spools and terminating in hooks D7. The strand from each of the spools D is carried around more or less'of the pins D6, as a greater or less friction is required upon theon one of the disks Das the strand is drawn lf desired, a washer, of leather or other friction material, may be placed between the head of the spool and its supporting frictiondisk in order to increase the friction.

."lhe spindles D2 are arrangedaround a central post D10, heldon the lower rail D and carrying at itsupper end a spider each of whose arms forms a strand-guide, through an eye Vin which the strand is passed for the purpose of holding the strands apart as they pass to the head by whose rotation they are twisted together into a singlecord.

The spider forming the strand-guides is attached to the post by a set-screw D11, which allows a vertical adjustment of the spider on the post, whereby the angle of the strands relatively to their axis of rotation is varied.

I am aware that it is not new to make the strand-guides adjustable, so as to vary` the angle between the strands and the axes of the IOO strand-spools; butin such cases the die or.

. contained in a rotating frame H, having the compartments H and H2. The frame H receives a rapid rotary motion about a vertical central axis by means of apinion I, attached to a hub I-I3 on the frame H and driven, through the intermediate pinion I', by the gear I2, which receives its motion, through the bevelgears I2 and I4, from the revolving shaft G. Within the hub H2 is a sleeve formed of the elongated hub of the pinion J and having at its upper end a pinion K, engaging the gears K', attached to the stretching-drums O. The pinion J is driven, through the intermediate pinion J', by the gear J2, which receives its motion, through the bevel-gears 'J3 J4, from the revolving shaft F, which revolves in an opposite direction from the shaft G. In practice I usually prefer to apply power to the shaft G and drive the shaft F from the shaft G through a pair of spur-gears whose ratio may be readily varied, thereby changing the speed, relatively, of the frame H and the stretching-drums. The frame H turns about the hub of the pinion J as its lower bearing, and the hub of the pinion J turns about a tube L, fixed in and projecting upward from the end of the yoke M. (Shown in sectional view in Fig. 2.)

The two intermediates I and J 4 are on a st-ud held in the yoke M, and the gears I2 J 2 also turn on a stud in the yoke M. In the tube L is a tube N, having at its lower end the ways, placed obliquely to the axis of the tube, to receive the sliding cylindrical pins N' N', their lower ends presenting the opposing faces N2 N2, each having a groove, which together form the opening N3, Fig. 4, through which the cord passes. The outer surface of the tube N is screw-threaded for a portion of its length at L to receive the screw-threaded nut L2, which has a sleeve L3, extending downwardly into the sleeve L4, which has the two prongs N4 N4, extending over and resting upon the upper ends of the sliding pins N N. The sleeve L4 has an annular chamber L5, closed at the bottom by the flange L6 and at the top by the sleeve L2.

Within the annular chamber L5, I place a spiral spring L7, with its tension exerted against the flange L6 and the end of the sleeve L3, so as to press the prongs N4 N4 down upon the upper ends of the pins Nl N and compress the cord between the faces N2 N2. The nut L2 is square or hexagonal, so as to receive awrench, and I keep it from being turned by a locking-plate L8, having a hole in the center to receive the tube on which it may be lifted, but is prevented from turning by means of a spline or prong L9 entering a groove in the tube N or by any of the known methods by which the locking-plate may be held from turning on the tube, while it may be raised and lowered. The ends of the locking-plate are turned down to fit the sides of the nut, so as to keep the nut from being turned, except when the locking plate is raised.

The sliding pins N' N are held from turning by the pins N8 N8, which slide in the slots N9 N9. The slots N9 N 2 are open at the upper end, so the pins Nl N may be removed and others substituted having grooves of different sizes forming the opening N3 larger or smaller for cords of different size. The pressure exerted upon the cord as it passes through the opening Nsis regulated by screwing the nut L2 up or down,and thereby varying the tension of the spring L7. As the cord leaves thetube N it is carried over a guide-pulley to the upper grooves in one of the scoring or tapering drums O O in the same manner as in the patents above referred to. The scoring-drums O O are integral wit-h the gears K and are attached by set-screws O3 to vertical spindles, which carry upon their upper ends pinions O4, engaging a gear P upon the drum P', carrying a plate R and having the screwthreaded arms R4 held by nuts R6 and provided with forks B5 at their outer extremities to receive the cord. The reeling mechanism, however, forms no part of my present invention, and it is therefore not shown or described in detail.

In the operation of twisting a cord the 'several strands are taken from the spools D', each strand being carried around the outside of the pins DG and under the hook D7 of the last pin and through the eyes D8 of the threearmed spider to the compressor. The compressor is furnished with a pair of sliding pins N4, having grooves to form an opening N3 the size of the cord to be made, and the required pressure on the cord is secured by lowering the nut L2, thereby increasing the tension of the spiral spring L7, which is exerted through the fiange L6 and prongs N4 on the upper ends of the lsliding pins N. As the compressor is rotated with the frame H a twist will be imparted to the strands immediately below the jaws of the compressor, the .individual strands being held apart by the eyes D8, a twist being also given to each strand by the rotation of the hooked pins D6.

From the tube N of the compressor the twisted A cord is taken to the stretching and reeling` mechanism, which operates in substantially the same manner as described in the patents heretofore granted to me and above referred to.

What I claim as my invention, and desire to secure by Letters Patent, is-- l. In a twisting-machine,the combination with mechanism for imparting a rotary motion to the cord to be twisted, of a series of IOO IIO

spool-supports consisting of disks attached to rotating spindles and a series of pins held in said disks and extending upwardly around the spools supported upon said disks, each of said pins having a hook at its upper or free end, as and for the purpose set forth.

2. In combination, a rotating spindle, a disk attached to said spindle, and a series of pins held at one end in said disk, and each provided at its free end with a hoo-k, substantially as described.

3. In a twisting-machine, the combination with mechanism for imparting a rotary motion to the cord to be twisted, of a spool-support consisting of a disk attached to a'rotating spindle, a series of pins held in said disk and arranged concentrically around the spool sup- .ported upon said disk, oneor more of said pins being provided at its free end with a hook, substantially as described.

4. In a twisting-machine, the combination with mechanism for imparting a rotary motion to the cord to be twisted of a series of rotating spindles D2, disks D3 attached to said spindles, pins D6 held in said disk, each having a hook D7, a post D10 parallel with said spindles and a strand-guide adjustably attached to said post and provided with eyes DS, substantially as described.

5. The combination With mechanism for rotating the cord to be twisted, of a tube placed concentrically with the axis of the twisted cord and having ways for compressing-jaws, placed obliquely to the axis of the cord,` jaws held in said oblique ways and capable of sliding therein, with the convergent ends adapted to press against the cord 1 and means for applying pressure to the divergent ends of'said jaws, substantially as described.

6. The combination with mechanism for rotating the cord to be twisted, of a tube placed concentrically with the axis of the twisted cord, and having Ways for compressor-jaws placed obliquely to the axis of the cord, compressor-jaws capable of sliding in said ways and having their convergent ends grooved, a sliding collar sliding on said tube and provided with prongs resting on the divergent ends of said jaws, and means whereby said collar is pressed against the ends of said jaws, substantially as described.

7. In a twisting-machine, the combination with mechanism for rotating the cord to be 

